Improvements to Argon-Argon Dating of Extraterrestrial Materials
The source of potassium and argon in ordinary chondrites is determined by comparing the argon activation energies of feldspar, pyroxene, and olivine with that of the L chondrites Chico and North West Africa (NWA) 091. In addition, shock pressures of 29 to 55.8 GPa are shown to lower the activation e...
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| Language: | en |
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The University of Arizona.
2011
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| Online Access: | http://hdl.handle.net/10150/145293 |